39007949 has 2 divisors, whose sum is σ = 39007950. Its totient is φ = 39007948.

The previous prime is 39007921. The next prime is 39007957. The reversal of 39007949 is 94970093.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21325924 + 17682025 = 4618^2 + 4205^2 .

It is an emirp because it is prime and its reverse (94970093) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39007949 - 2¹⁶ = 38942413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39007919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19503974 + 19503975.

It is an arithmetic number, because the mean of its divisors is an integer number (19503975).

Almost surely, 2^39007949 is an apocalyptic number.

It is an amenable number.

39007949 is a deficient number, since it is larger than the sum of its proper divisors (1).

39007949 is an equidigital number, since it uses as much as digits as its factorization.

39007949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 39007949 is about 6245.6343953197. The cubic root of 39007949 is about 339.1441826848.

The spelling of 39007949 in words is "thirty-nine million, seven thousand, nine hundred forty-nine".